﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using DslShell = Microsoft.VisualStudio.Modeling.Shell;
using VSShell = global::Microsoft.VisualStudio.Shell;
using Microsoft.VisualStudio.Shell.Interop;
using Microsoft.VisualStudio.Modeling.Shell;
using System.Runtime.InteropServices;
using Microsoft.VisualStudio.Modeling.Shell;
using Microsoft.VisualStudio.Modeling;

namespace nHydrate.DslPackage.Forms
{
	[Guid("22121DCE-997E-41D2-B2DD-B7F558B10DAF")] 
	public class DocumentationWindow : ToolWindow
	{
		private DocumentationWindowControl _docControl;
		private nHydrate.Dsl.nHydrateModel _model = null;
		private DiagramDocView _diagram = null;
		private ModelingDocData _docView = null;
		private List<Guid> _loadedModels = new List<Guid>();

		//creates the tool window
		public DocumentationWindow(global::System.IServiceProvider serviceProvider)
			: base(serviceProvider)
		{
			_docControl = new DocumentationWindowControl();
		}

		/// <summary>
		/// Specifies a resource string that appears on the tool window title bar.
		/// </summary>
		public override string WindowTitle
		{
			// TODO: Normally you would set the windows Caption reading it from resources
			get { return "nHydrate Documentation"; }
		}

		//puts a label on the tool window
		public override System.Windows.Forms.IWin32Window Window
		{
			get { return this._docControl; }
		}

		private void newView_SelectionChanged(object sender, EventArgs e)
		{
			var doc = sender as nHydrate.DslPackage.nHydrateDocView;
			var selectedList = doc.GetSelectedComponents().Cast<ModelElement>().ToList();
			if (selectedList.Count == 1)
				_docControl.SelectElement(selectedList.First());
			else
				_docControl.SelectElement(null);
		}

		private void ModelExplorerToolWindow_SelectionChanged(object sender, EventArgs e)
		{

		}

		protected override void OnDocumentWindowChanged(ModelingDocView oldView, ModelingDocView newView)
		{
			if (newView != null && oldView == null)
			{
				//The view is being loaded
				newView.SelectionChanged += new EventHandler(newView_SelectionChanged);

				var docData = newView.DocData as nHydrateDocData;
				if (docData.ModelExplorerToolWindow != null)
					docData.ModelExplorerToolWindow.SelectionChanged += new EventHandler(ModelExplorerToolWindow_SelectionChanged);

			}
			else if (newView == null && oldView != null)
			{
				//The view is being loaded
				oldView.SelectionChanged -= new EventHandler(newView_SelectionChanged);

				var docData = oldView.DocData as nHydrateDocData;
				if (docData.ModelExplorerToolWindow != null)
					docData.ModelExplorerToolWindow.SelectionChanged -= new EventHandler(ModelExplorerToolWindow_SelectionChanged);
			}

			_docControl.SetupObjects(_model, _diagram, _docView);
			base.OnDocumentWindowChanged(oldView, newView);

		}

		public void SelectElement(ModelElement element)
		{
			_docControl.SelectElement(element);
		}

	}
}
